Here are six who could make the biggest impact in this season's English Premier League.
Here are five talking points from the weekend in La Liga:
Arsenal conceded five goals for the first time at their Emirates Stadium as they suffered their worst home defeat for 19 years.
Leaders Bayern Munich twice surrendered the lead in a 2-2 Bundesliga draw at 10-man Eintracht Frankfurt on Saturday and Borussia Moenchengladbach missed two penalties in a goalless draw against Hamburg SV.
Real Madrid completed their pre-season tour of Australia with a crushing 4-1 friendly win over a depleted Manchester City in front of a record soccer crowd of 99,382 at the Melbourne Cricket Ground on Friday.
Rafa Benitez kicked off his tenure as Real Madrid boss with a frustrating 7-6 penalty shootout loss to AS Roma in a pre-season friendly on Saturday.
Tottenham Hotspur's hopes of moving into the top four stalled in a 2-2 draw at bottom club Norwich City, while several VAR interventions overshadowed the action. Images from EPL matches played on Saturday.
The perfectionist in Pep Guardiola forbids him to get remotely carried away by Manchester City's 100 per cent record this season even though they made it 10 wins out of 10 under their new Spanish manager on Saturday.
Images from EPL matches played on Wednesday.
Cristiano Ronaldo and Lionel Messi will again be duelling for the title of world's best footballer after their names once again headed the shortlist on Thursday for The Best FIFA Men's Player.
Cristiano Ronaldo hit back at critical former boss Jose Mourinho in the best way possible on Wednesday with two goals to help Real Madrid beat Chelsea 3-1 and win the International Champions Cup pre-season tournament.
The victory, Chelsea's 28th of the season, put the long-time league leaders 10 points clear of second-placed Tottenham Hotspur, who have only three games left to play.
Tottenham Hotspur manager Andre Villas-Boas said the club could fine forward Gareth Bale for failing to attend training ahead of an expected world record "dream" move to Real Madrid. Bale, who has not been training with the squad due to injury, was granted three days off but did not report back to the club on Tuesday despite being pictured in London.
Real Madrid won the Club World Cup for the first time by beating San Lorenzo 2-0 on Saturday with goals from Sergio Ramos and Gareth Bale after being forced into a scrap by the feisty South Americans.
Buoyant Chelsea extended their Premier League lead and calmed nerves at Stamford Bridge with a 4-2 win over Southampton on Tuesday that moved them seven points clear of their nearest pursuers Tottenham Hotspur.
Bayern left fuming over Champions League 'robbery'.
Before Leicester enchanted the sporting world last year with their miraculous Premier League title win, Atletico had worked similar wonders in 2014 by breaking the strangehold of Real Madrid and Barcelona in La Liga.
The three Premier League and three La Liga clubs in the last eight avoided each other, with Manchester City up against Atletico Madrid and Liverpool to face Portuguese side Benfica.
A round-up of Saturday's action in Serie A, La Liga and Bundesliga.
The Greek league leaders confirmed the move but did not give financial details. Local media said Toure would be paid around 2.5 million euros ($2.9 million) for one season.
Cristiano Ronaldo admits that he suffered for pushing himself too much at the end of last season but is now close to his best as Real Madrid prepare to face Real Sociedad this weekend.
Check out the 10 most expensive transfers in British soccer history.
Images from UEFA Champions League matches played on Wednesday.
'I am talking about people outside of here. I think it is pretty clear. Sometimes we haven't lost games and the hysteria around it is pretty clear. There is maybe something else going on from behind' 'We wanted to win for the manager'
Real Madrid coach Zinedine Zidane is leaving the European champions after two years in charge.
Real Madrid set up a King's Cup semi-final against holders Atletico Madrid or Athletic Bilbao when they beat Espanyol 1-0 in their quarter-final, second leg on Tuesday for a 2-0 aggregate success.
A late double from Cristiano Ronaldo put some gloss on a stuttering performance from Real Madrid as they beat Celta Vigo 3-0 to cut the gap at the top of La Liga to five points.
Juventus substitute Cristiano Ronaldo was denied a stoppage-time winner by VAR as Udinese came from two goals down to snatch a 2-2 draw in their thrilling Serie A season opener on Sunday.
News of all that's transpired on and off the football field
Heavyweight trio Manchester City, Manchester United and Chelsea kept up their 100 per cent starts to the Premier League season this weekend.
News of all that transpired on and off the football field.
Hazard extra-time goal sends 10-man Real Madrid through to Copa del Rey final.
Real Madrid president Florentino Perez has hinted the world's richest club by income could buy Monaco's Colombia striker Radamel Falcao next year.
News of all that's transpired on and off the football field
Manchester City secured a record 15th straight victory in all competitions with a 3-1 win at Championship side Swansea City in the FA Cup fifth round on Wednesday.
In leading Real Madrid to their 11th European Cup less than five months after inheriting an unhappy team from Rafael Benitez, Zinedine Zidane has cemented his heroic status at the Bernabeu and appears to have assured his immediate future.
David Beckham believes Real Madrid should give his former team mate at the club, Zinedine Zidane, time to succeed even if the French great fails to inspire them to victory in the Champions League final later this month.
IMAGES from the soccer matches played across European leagues over the weekend.
Cristiano Ronaldo grabbed a record 23rd La Liga hat-trick to guide leaders Real Madrid to a 3-0 victory over Celta Vigo. It also helped the European champions extend their club record winning streak to 18 matches in all competitions.
Alaba strike on Clasico debut gives Real Madrid 2-1 win at Barcelona.
